/**
* Turns all urls into clickable links.
*
* Example:
* <?=$text_helper->auto_link_urls($post->body, array('all', 'target' => '_blank'));?>
*/
function auto_link_urls($text, $href_options = array())
{
$extra_options = TagHelper::_tag_options($href_options);
$links = TextHelper::get_urls_from_text($text);
$linked_urls = TextHelper::get_linked_urls_from_text($text);
$urls_to_replace = array_diff(array_keys($links), $linked_urls);
$find = array();
$replace = array();
foreach ($urls_to_replace as $url_to_replace) {
$find[] = '@' . preg_quote($url_to_replace) . '@';
$replace[] = '<a href="' . $links[$url_to_replace] . '"' . $extra_options . '>' . $url_to_replace . '</a>';
}
return preg_replace($find, $replace, $text);
}
